Clock attachment for flat knitting machines



Nov. 24, 1936. w, H I-rz 2,062,224

CLOCK ATTACHMENT FOR FLAT KNITTING MACHINES Filed NOV. 21, 1935 ATTORNEY Patented Nov. 24, 1936 CLOCK ATTACHMENT FOR FLAT KNITTING MACHINES Woldemar Heinitz,

to Schubert & Salzer Maschin gesellschaft, Chemnitz, Germany Application November 21, 1935, Serial No. 50,944

2 Claims.

The present invention relates to flat knitting machines for producing stockings in a single operation and is,

more particularly, concerned with a clock attachment adapted to be used in connection with such knitting machines for the manufacture of forked clock designs in stockings.

On fiat knitting machines for of stockings I loops on the the manufacture in a single operation in which the needles producing the middle portion of the stocking are placed in suspense during the manufacture hitherto not manner a sodesign, one arm of which extends into the heel of the .heel parts it has been possible to produce in a simple called clock fork, 'i. e. a forked clock part, while the other arm extends into the middle portion of the stocking.

In the normal position the clock fingers occupy until the manufacture of the heel parts is started, knitting of the heel parts would result in one of the clock fingers being moved into the free space between the lowing heel parts. Therefore, means, al-

an alteration of the distance between the clock fingers, must be provided to prevent, on the one hand, movement of one of the clock fingers into the free the other ha space between the heel parts and, on nd, to simultaneously allow the production of the forked arms of the clock design in both heel parts. After finishing the heel parts and at the beginning of the manufacture of the middle portion of the stocking it is, moreover, desirable to alter the distance between the two clock fingers in a manner allowing simultaneous manufacture of the arms of the forked clock design extending into the middle portion of the stocking.

A generally used method is to fix the two clock fingers upon two separately journalled clock finger bars and to displace the two bars with respect to each other, until the desired dista obtained.

This mthod of nce between the two clock fingers is clock finger rack, however, of-

fers difflculties when used in connection with knitting machines adapted to produce stockings in a single operation, used for other purposes, picot members, and the as the clock finger bars are for instance by edge and like.

Under certain circumstances the addition of a further clock finger bar would be possible, but as this bar must be mounted above the other bars, this arrangement would, on account of the required great prive the ole According length of the clock finger arm, deck point much of its rigidity.

to the present invention, the alterto obtain this purpose Germany December 6, 1934 ation of the for the production Chemnitz, Germany, assignor enfabrik Aktiendistance between the clock fingers of forked clock designs is obtained by the use of a divided clock finger bar. The clock finger bar according to the present invention consists of two commonly journalled parts, forming a unit, which parts may be longitudinally moved with regard to each other.-

The accompanying drawing shows the invention by way of example.

In this drawing:

Fig. 1 diagrammatically shows a side elevation of a portion of a stocking having design;

a forked clock Fig. 2 shows an elevation of the clock attachment according to Fig. 3 is a section on line Fig. 4 is a detail'elevation,

the invention;

3-3 of Fig. 2;

showing the clock fingers in another position, and

Fig. 5 diagrammatically shows a piece of fabric, representing the arms of the forked clock design obtained by gers according to Fig The clock finger according to the invention,

the position of the clock fins. 2 and 4. bar used hitherto consists, of two parts I and 2 for instance of semi-circular cross section. The two parts are journalled in a suitable manner in the frame of the machine, not shown in the drawing, and may be lon spect to each other.

Upon the part I of gitudinally shifted with rethe clock finger bar a sleeve 4 is fixed by means of screws 3 and provided on this sleeve is 5. The part 2 of the an arm 6 carrying the-clock finger clock finger bar is shiftablyarranged in the sleeve 4. Upon the part 2 of the clock finger bar a sleeve 8 is fixed by means screws 1 and provided on this sleeve is arm III carrying the other clock-finger 9. In

the sleeve 8 the part shiftably arranged.

The two parts I and I of the clock finger bar is 2 of the clock finger bar may be connected together by a clutch to prevent mutual displacement during operation. As

shown more particularly in substantially consists of a Fig. 3, the clutch slotted ring II the opposed ends of which are provided with bosses I2, I3. Both bosses I2, I3 have a bore and the bore of the boss I3 is provided with a thread for cooperation with a through the bore of the boss I2.. of the screw I4 carries a freely passing The upper end handle I5 for facilitat-- screw I4 ing clamping and releasing of the clutch ring An L-shaped guide member I6 consists of one piece with or is connected to the clutch ring II and in this guide member is adjustably mounte I6 a slide I'I,'I8 d. The lower end I8 01 the slide I1, I8 has about the shape of a trapezoid and in this portion of the slide two slots I9 and 20 are provided which are arranged at about 45 towards the longitudinal axis of the two parts I and 2 of the clock finger bar. Slidably fitted in the inclined slot I 9 is a pin 2I fixed to the part I of the clock finger bar, and in the inclined slot 20 a pin 22 fixed to the part 2 of the clock finger bar slidably engages. The part II of the slide I1, I8 is provided at about its middle portion with three notches 23 in which a screw 24 inserted into the guide member I6 may engage for the purpose of holding the slide I1, I8 in its different positions of adjustment in which the distance of the clock fingers 5 and 9 from each other is, for a purpose stated presently, equal ,to the distance I, II and III respectively.

The operation of the clock attachment according to the present invention for the production of forked clock designs in stockings made in a single operation on a fiat knitting machine is as follows:

If during the manufacture of. the leg portion A of a stocking (Fig. 5), clock designs are to be produced at the places marked aa-b and a'-b and further at the places marked b-c and bd and bc' and b'd' respectively, the clock fingers 5 and 9 first must be adjusted to be sepa-- rated from each other by the distance I. For effecting this adjustment the clutch ring II is released by loosening the screw I4, I5 to allow mutual displacement of the parts I, 2 of the clock finger bar. Thereupon the screw 24 is loosened and the slide I'I, I8 moved downwardly from its highest position shown in Fig. 2 until the screw 24 may engage into the middle notch 23 of the slide member II. During the downward movement of the slide I1, I8 the pins 2I and 22 respectively slide in the corresponding inclined slots I9 and 20, whereby the parts'I and 2 of the clock finger bar are displaced with respect to each other until the distance between the clock fingers 5 and 9 is equal to the distance I, so that after clamping of the clutch I I by means of the screw I 4, I5 the clock fingers 5 and 9 may work the clock design in the above mentioned portions of the stocking.

As soon as the manufacture of the heel parts is started at which time the needles carrying the loops of the middle portion of the stocking are placed in suspense, one of the clock fingers would. if the distance between them would remain equal to the distance I, operate in the heel part, where as the clock finger at the other side would simultaneously be positioned in the space of the middle portion of the stocking placed in suspense.

Such operation, of course, is not desirable and therefore, before starting with the manufacture of the heel parts, it is necessary to alter the distance of the clock fingers from each other in sucha manner, that the clock fingers 5 and 9 may operate in the corresponding heel parts.

For this purpose the clutch ring II is again released by turning the screw I4, I5, whereupon,

5 after loosening of the screw 24, the slide I I, I 8

lowermost notch 23 in the slide II, I8. The clock fingers 5 and 9 are now positioned in the distance II from each other, so that, after clamp j ing the clutch ring II by tightening the screw I 4, I5, the clock design may be produced in both heel parts simultaneously at c-e and c'-e' respectively. After finishing the heel parts, an alteration of the distance of the clock fingers 5 and 9 from each other is again required, to allow the manufacture of the clock design at d-f and d'f' respectively in the middle portion of the stocking which 'now is about to be knitted. Therefore, the clutch ring I I is again released by turning the screw I4, I5 and, after loosening of the screw 24, the slide I'I, I8 is brought in "its lowermost position in which the pins 2|, 22 lie at the upper ends of the inclined slots I9 and 20 respectively, 1. e.. the clock fingers 5 and 9 are shifted with regard to each other, until they occupy the position shown in Fig. 4 in which the distance from each other is equal to the distance III. The screw I 4, I5 is tightened again, to fix the clutch ring II and thereby the clock fingers 5 and 9 in the desired position with regard to each other, so that the clockdesigns may be produced at d and d'-f' respectively as shown in Fig. 5.

It is to be understood, that the present invention is not limited to the construction shown and described, as modifications may be made with- I out departing from the spirit of the invention.

What I claim is:

1. A clock attachment for fiat knitting machines, comprising a clock finger support, consisting of two bars, a sleeve fixed to each of said bars and forming a guide for the other of said; bars, a clock finger at each of said sleeves. a clutch, consisting of an open ring, surrounding said bars, a screw passing through bosses near the ends of said open ring and adapted to firmly clamp said ring on said bars, a guide member on said ring, a slide, having slots inclined in opposite directions towards said clock finger support, adapted to be guided in said guide member, a screw inserted in said guide member and adapted to engage notches provided in said slide, and a pin, connected to each of said bars forming said clock finger support, each of said pins engaging one of said inclined slots in said slide.

2. A clock attachment adapted to produce forked clock designs in stockings made in a sin- I WOLDEMAR HEINITZ. 

